128102756923 has 2 divisors, whose sum is σ = 128102756924. Its totient is φ = 128102756922.

The previous prime is 128102756917. The next prime is 128102757007. The reversal of 128102756923 is 329657201821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128102756923 is a prime.

It is not a weakly prime, because it can be changed into another prime (128102756123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64051378461 + 64051378462.

It is an arithmetic number, because the mean of its divisors is an integer number (64051378462).

Almost surely, 2^128102756923 is an apocalyptic number.

128102756923 is a deficient number, since it is larger than the sum of its proper divisors (1).

128102756923 is an equidigital number, since it uses as much as digits as its factorization.

128102756923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 128102756923 in words is "one hundred twenty-eight billion, one hundred two million, seven hundred fifty-six thousand, nine hundred twenty-three".